Moscow Mule Copper Mugs 16 Oz 4 Pack (Set of 4) Includes 4 mugs, 16-Ounce Capacity Copper Moscow mule mug with stainless steel lining Stainless lining and exterior lacquer coating over copper for protection and durability Food safe seamless hygienic stainless steel interior keeps your drink ice cold; ice will remain frozen for at least 2 hours! Ships from the United States not China, ships within one business day. Includes our Lifetime Guarantee from manufacturing defects. We stand behind our Moscow Mule Mugs.